Ginger, a 9-year-old otter, gave birth to three more otters on Feb. 20 -- two females, Ashkii and Sudali, and a male, Victor.

The father of both litters, Wyatt, is the zoo's only adult male otter, zoo officials said. He came to Oakland two years ago from a Texas zoo.

"North American river otters are in high demand in zoos and Oakland Zoo's breeding success means that these charismatic little guys will eventually get to charm even more children in other zoos across the country," Margaret Rousser, a zoological manager at the Oakland Zoo, said in a statement.